//
// Copyright 2019 Animal Logic
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#pragma once

#include <pxr/usdImaging/usdImagingGL/engine.h>
#include <pxr/usdImaging/usdImagingGL/renderParams.h>

PXR_NAMESPACE_USING_DIRECTIVE

namespace AL {
namespace usdmaya {
namespace nodes {

class Engine : public UsdImagingGLEngine {
public:
  Engine(const SdfPath& rootPath,
         const SdfPathVector& excludedPaths);

  struct HitInfo {
    GfVec3d worldSpaceHitPoint;
    int hitInstanceIndex;
  };
  typedef TfHashMap<SdfPath, HitInfo, SdfPath::Hash> HitBatch;

  typedef std::function<SdfPath(const SdfPath&, const SdfPath&, const int)> PathTranslatorCallback;

  bool TestIntersectionBatch(
    const GfMatrix4d &viewMatrix,
    const GfMatrix4d &projectionMatrix,
    const GfMatrix4d &worldToLocalSpace,
    const SdfPathVector& paths,
    UsdImagingGLRenderParams params,
    unsigned int pickResolution,
    PathTranslatorCallback pathTranslator,
    HitBatch *outHit);
};

}
}
}
